Clean Water Act discharge permit · NPDES ILG580052
OLMSTED STP, VILLAGE OF, Olmsted, IL: NPDES ILG580052 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
OLMSTED STP, VILLAGE OF, held by OLMSTED, VILLAGE OF, holds NPDES permit ILG580052, which discharges to Hodges Creek. EPA’s file records it issued May 16, 2014 and expiring June 30, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | OLMSTED STP, VILLAGE OF |
|---|---|
| Permittee as filed | OLMSTED, VILLAGE OF |
| NPDES ID | ILG580052 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 16, 2014 |
| Expiration date | June 30, 2018 |
| Address | Olmsted, IL 62970 |
| Receiving water | HODGES CREEK |
| Subwatershed | Hess Bayou-Ohio River (HUC 051402060703) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 7With a violation of any kind
- 4With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 5 | 62 | 50 | November 30, 2024 | 168% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 22 | 14 | June 30, 2013 | 76% over the limit |
| Oxygen, dissolved [DO] | 1 | 6 | 6 | August 31, 2025 | 27% over the limit |
| pH | 2 | 6 | 2 | February 28, 2013 | |
| Flow, in conduit or thru treatment plant | 4 | 12 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 4 | 0 | ||
| Chlorine, total residual | 1 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| Coliform, fecal general | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 10, 2026 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| March 26, 2026 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| April 6, 2025 | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, ILG580052.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID ILG580052 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.